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PF-03814735

Catalog No. T6936   CAS 942487-16-3

PF-03814735 is a novel, potent and reversible inhibitor of Aurora A/B with IC50of 0.8 nM/5 nM, is less potent to Flt3, FAK, TrkA, and minimally active to Met and FGFR1. Phase 1.

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PF-03814735 Chemical Structure
PF-03814735, CAS 942487-16-3
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Biological Description
Chemical Properties
Storage & Solubility Information
Description PF-03814735 is a novel, potent and reversible inhibitor of Aurora A/B with IC50of 0.8 nM/5 nM, is less potent to Flt3, FAK, TrkA, and minimally active to Met and FGFR1. Phase 1.
Targets&IC50 Aurora A:0.8 nM, Aurora B:5 nM
In vitro In intact cells, the inhibitory activity of PF-03814735 on the Aurora1 and Aurora2 kinases reduces levels of phospho-Aurora1 (Thr 232, a sensitive marker of Aurora1 activity, with IC50 ~ 20 nM), phosphohistone H3 (with IC50 ~ 50 nM), and phospho-Aurora2 (with IC50 ~150 nM). PF-03814735 produces a block in cytokinesis, resulting in inhibition of cell proliferation and the formation of polyploid multinucleated cells. [1] A recent research indicates small cell lung cancer (SCLC) and, to a lesser extent, colon cancer lines are very sensitive to PF-03814735. The status of the Myc gene family and retinoblastoma pathway members significantly correlates with the efficacy of PF-03814735. [1]
In vivo Once-daily oral dosing of ≥20 mg/kg of PF-03814735 for 10 days to mice bearing HCT-116 xenografts resulted in statistically significant and dose-dependent tumor growth inhibition of ≥50% relative to vehicle-treated mice. The inhibition is associated with a reduction in phosphorylated histone H3 levels. Significant single-agent antitumor efficacy is observed in five additional xenograft tumor models, including A2780 ovarian carcinoma, MDA-MB-231 breast carcinoma, colo-205 and SW620 colorectal carcinomas, and HL-60 acute promyelocytic leukemia. [1] In vivo experiments with two SCLC xenograft models confirms the sensitivity of Myc gene-driven models to PF-03814735 and a possible schedule dependence of MYC/c-Myc-driven tumors. [1]
Kinase Assay Recombinant Kinase Assays: Aurora1 and Aurora2 proteins are produced as full-length His-tag recombinant proteins expressed in insect cells. For the Aurora2 kinase assay, phosphorylation of the substrate peptide by recombinant Aurora2 protein is assessed by a Z'-LYTE assay at 3 to 300 μM ATP and various concentrations of PF-03814735 over 60 minutes, at a substrate peptide concentration of 2 μM (biotinylated LRRWSLG, ×4). Phosphorylation is linear over this time for all conditions. For the Aurora1 kinase assay, phosphorylation of the substrate peptide by recombinant Aurora1 protein is assessed by a scintillation proximity assay in a 96-well plate format in which the incorporation of 33P into the peptide substrate (biotinylated LRRWSLG, ×4) is measured by capturing the peptide on a streptavidin scintillation proximity assay bead.
Cell Research Cell lines are grown in appropriate media and evaluated after 48 h of exposure to either PF-03814735 or vehicle, followed by cell number determination in a Coulter Counter. Proliferation (as measured by an increase in cell number) is expressed as a percent of untreated controls. To evaluate the PF-03814735 exposure time required for antiproliferative activity, HL-60 cell cultures are cultured in RPMI medium supplemented with 15% heat-inactivated fetal bovine serum and exposed to various PF-03814735 concentrations for 4, 8, 12, 24, and 48 hours, followed by a washout step and incubation with growth media without PF-03814735 for the remainder of the 72-h assay period. Continuous exposure to PF-03814735 for 72 hours is also evaluated. Cell counts are determined by a Coulter Counter.(Only for Reference)
Molecular Weight 474.48
Formula C23H25F3N6O2
CAS No. 942487-16-3

Storage

Powder: -20°C for 3 years | In solvent: -80°C for 1 year

Solubility Information

DMSO: 47.5 mg/mL (100 mM)

Ethanol: 9.5 mg/mL (20 mM)

TargetMolReferences and Literature

1. Jani JP, et al, Mol Cancer Ther, 2010, 9(4), 883-894. 2. Hook KE, et al, Mol Cancer Ther, 2012, 11(3), 710-719.

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Keywords

PF-03814735 942487-16-3 Angiogenesis Cell Cycle/Checkpoint Chromatin/Epigenetic Cytoskeletal Signaling Tyrosine Kinase/Adaptors Aurora Kinase Trk receptor FLT VEGFR FAK PF03814735 inhibit Inhibitor Vascular endothelial growth factor receptor PF 03814735 inhibitor

 

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